a) The unit shall be placed on a te

a) The unit shall be placed on a test platform and leveled. If the unit is equipped with glides, extend them to their midpoint but not to exceed 13 mm (0.5 in.) from the fully retracted position. If equipped with casters, each front caster shall be blocked with an obstruction or other restraining device 13 mm (0.5 in.) in height affixed to the test platform. The device shall prevent sliding but not restrict the unit from tipping. Casters shall be oriented in their least stable position. b) Determine the two extendible elements that, when loaded and opened, provide the least stable condition. (This may require evaluation of whether interlocked extendible elements can be opened if they are activated simultaneously.) Load these extendible elements with the functional load specified per Table 1 (See page 20). Load shall be configured per Section 3.9. If the unit does not allow two extendible elements to be opened simultaneously, only load the largest capacity extendible element. More than one loading configuration may be required to verify that the least stable condition has been evaluated. c) All remaining extendible elements and desk/table components shall be in the closed position, unlocked, and not loaded.